Doorcheck



Aug. 24 1926. 1,597,274

E. w. F. HERRMANN DOORCHEGK Filed June 30, 1924 2 Sheets-Sheet 1 115,1.

2 Shams-Sheet 2,

1 m rm NR Nh. R. \J Q E H Q W V wm ATTORNEY Erna? Mlyz errmann Aug. 24

. E. w. F. HERRMANN DOORGHECK Filed June 30, 1924 dag Patented 24, 1926.

UNlTED STATES ERNST WILLIAM FERDINAND HERB-MANN, OF SAN ANTONIO, TEXAS.

DOORCHECK.

Application filed June 30, 1924. Serial No. 723,305;

1? ing a structure of the class stated in which all wearing parts are so constructed and ar-l ranged as to be readily removable for re placement with minimum'amount of labor and expense.

The invention still further resides in the provision of means whereby the checking or braking action of the device is governor lever controlled and may be neutralized ust at the consummation of the closing movement of the door sothat the same may freely complete its movement to the absolute closed position, thus preventing interference with spring catch appliances with which the door may be equipped, suchas a night-latch or the like.

With the above and other objects in View, the invention still. further resides in those novel details of construction, combination and arrangement of parts, all of which will be first fully described, then beparticularly pointed out in the appended claims reference being had to the accompanying draw ings, in which 1 a V Figure 1 is a detail perspective view illustratingthe application of the invention.

Figure 2 is a side elevation of the brake control or governor mechanism.

Figure 3 is front elevation of the parts shown in Figure 2. i

Figure l is a side elevation of the brake mechanism carrying bracket and the mechanism carried thereby, the door being shown in section.

Figure 5 is a frontelevation of the parts shown in Figure l. 1 T

Figure 6 is a plan view of the parts shown in:Figure 4,. r

Figure 7 is a detail perspective of the op crating or crank rod, per se. a

Figure Sis a detail perspective view illustrating the application ofa modified form of the invention.

Figure 9 is a side elevation of the modified arrangement of brake control or governor mechanism shown in Figure 8.

Figure 10 is a plan view showing the application of the invention, the braking or check elements being shown in horizontal section.

Figure 11 is a detail cross section taken on the line 11-11 on Figure 10.

Figure 12 is a view similar to Figure 11, taken on the line 12-12 of Figure 10.

Figure 13 is a plan view of the brake or check applying bar.

Figure 14 is a detail perspective view of Elie brake action neutralizing spring mem- Figures 15 and 16 are detail perspective views illustrating the turn table and the blank from which it may be formed respec tively.

In the drawings, in which like numerals of reference indicate like parts in all of the figures, 1 indicates the door which is swingable on spring hinges 2, and the door frame 3. r

A governor lever supporting bracket 4 is top outermost corner thereof and may be secured to the face of the door adjacent the bent up from a single sheet of strip metal 1 to include an elongated loop bearing portion 5, securing feet6 adapted to be secured to the door portion by wood screws 7, and a circular rodbearing portion 8. In practice, the rod bearing portion 8 will be fitted with a suitable bearing sleeve 9 constructed of fibre, or other suitable material, such as will provide a noiseless bearing.

A pivot bolt 10 is provided and adapted to pass through the loop bearing portion 5t and the said bolt is constructed to include a pivot forming portion 11, and a bearing or stop head 12, being also suitably threaded at its end to accommodate the wing nut or thumb screw securing member 13. By rea- .son of constructing the bolt 10 as desbribed it will be readily apparent that the said bolt is slidable back and forth through the length of the loop bearing 5, and for aiding in the securing of the said bolt to a desired adjustment along its movable bearing square washer members 14 are provided one at each side of the loop portion 5 and lapping over the edges thereof so as to prevent rotation.

said lever. the drawings, twlll be. observed that the M is portion 11 of the bolt 10 is of larger diam;

eter than the remainder of the shank there of so as to prov de a shoulder for engaging the adjacent washer 14 to take up the thrusts set up by the screwingaction in a manner for providing a free pivot without danger of binding during the securing action.

A governor lever in the nature of an upright pendulum 15 is pivoted upon the pivot portion 11 of the pivot boltin a manner for being swingable in a vertical plane trans .versely of theplane of movement of the door.

The lever 15 is provided with a relatively long horizontally disposed slot 16 which surrounds the said pivot forming portionof the bolt 10 to provide a lost motion pivot for the By reference to Figure 2 of governor lever 15 comprises an upper ,long end and a lower shortend, the long end of the lever being provided with a. plurality of adjusting holes-17 through which cotter pins 18 pass to thereby be readily adjustable to position. The cotter pins 18 serve as a removable and adjustably securing means for the counterweight forming washers 19, a plurality of which surround the lever, 15 at the long end thereof in a manner for providing a suitable counterweight, the purpose for which will soon appear.

lhe short end of the lever is pivotally connected at 201to a link 21, which is in turn, pivoted as at 22 to the crank portion 23 of the brake actuating crank rod 2% horizontally oscillatabl in the bearing sleeve 9, hereinbefore referred to, and in a suitable bearing provided therefor in one of the side or hearing wings 25 of the brake mechanism supporting bracket 26.

The brakemechanism supporting bracket 6 may be bent up from a single sheet of net-al to include the side or hearing wings 5, and securing feet 27 adapted to be secured to the door face by the wood screws 2-8 at a point adjacent the up ermost edge thereof and suitably spaced between the hinge connection and the outer edge of the said door. The said bracket is also stamped and shaped to include a circular horizontally msitioned turn-table bearing 29 having a iarge central aperture 30 and the side wings "25 are provided with opposing bearing pin apertures 31 and securing pin receiving aper' tures 32, are purpose for all of which will be later explained.

A suitable bearing providing pin 33 is secured across between the side wings 2-5 and in the apertures 31 and a securing pin is s milarly mounted in the apertures 32, and the said pins provide a suitable bearing, and a means for securing to position, a brake operating lever 35 which includes the angied port-ion 36for resting upon the bearing pin 33 in a pivotal manner and in position for being secured to that manner of mountingr, while being sufiiciently free to move, by the securing pin 34. The brake operat ng lever 35 includes the pendent arm 3. which projects downwardly from the pivotal connection into the path of movement of the crank 38 of the oscillatable actuating rod 24ihcreinbefore described, and the upper end of the said lever terminates in an upwardly angled extension 39 which passes through the aperture 30 of the turn-table 29 and is adapted to engage the brake shoe hereinafter again referred to.

A turn-table 10, in the nature of an an nular ring, is horizontally rotatably mounted upon the turn-table bearing 29, the said turntable being provided with downwardly extended and angularly bent securing iii e ers al, which engage the inner annular edge of the said bearing member in a manner for securing theparts together in rigid relation. A suitable packer disk 4:2 may be interposed between the turn-table parts to provide a noiseless bearing. The turn-table is preferablyformed from a single sheet of metal shaped up to form hubs 43, each of which is equipped with a bearing sleeve 44 of fibre, or other material, for providing a noiseless bearing, and which said sleeves are secured, as at 45, to secure them within the said hubs in a removable manner for permitting ready replacement thereof when worn. The brake shoe is indicated by the numeral '6 and the said element rests upon the en- .-'a-ging end 39 of the brake operating lever 5 within the aperture 30, andv may, of

course, be constructed ofany suitable material such as leather, brake llnmg, brass, etc.

A check rod 47 is provided and is adapted to have the free end thereof pass slidably through the sleeves 44 of the hubs 43 and to have one end thereoi angularly bent as at 48 to be givotallv connected with the screw eye 49 secured to the top bar of the door frame 3. Thus, one end of the check rod'is pivotally secured to the fixed support or door frame and the other end freely slid-able through the bearings above stated and in a manner for being acted upon by the brake shoe l6 when the brake operating lever 35 is rocked to apply the brake shoe in a manner later to be described.

The foregoing is a description of the parts illustrated in Figures 1-7 inclusive of the drawings, and comprehends one embodiment or form of the invention.

By reference to the figures referred to, it

ill

will be observed that when the door is swung open, the governor lever 15,,by reason-of themanner of constructing and mounting the same, especially by reason of the counterweight equipment, will rock on its lost motion pivot, toward the door in a manner for causing the crank rod 24: to -rock in like direction and thereby to have no effect whatever upon the brake operating lever vor brake shoe 46. After the doorhae been opened, however, and is swung to the closed position, either by action of the spring hinges, or byan individuat slamming the same, the governor lever will rock ina direction away from the door, and in a manner for rocking the crank rod in alike direction,

suchas will cause the crank 38 thereof to engage the pendentarm 37 of the brake operating lever to tl1erebvrock the same and cause the upward angled extension 39 to engage the brake shoe i-(ito force the same into tight frictional contact with the check rod d7 to thereby retard. c osing action of the door in degree according to the speed of movement of the said door. By reason of providing the counterweight feature upon the governor leverthis retarding action in accordance with the speedo't movement of the door, is made'possible, itbeing under stood that the greater the speed of move-1 ment of the closingdoor, the greater will be the tendency for the counterweight to throw thelong end of the governor out-ward on its, lost motion pivot to thereby apply the brake shoe with greater force. i

Obviously by adjusting the weight or position oithe counterweight by adding wash ers thereto, or by changing the positionof the weight-with relation tothe pivot,- the action of this governor lever maybe varied to suit the requirements Byreason of the I provision of the pivot bolt 10 and the Com 5 M i i U secured as at 54 to the door andwlnch are nections therefor, it is possible to vary the reat've positionot this bolt and the elongated aperture 16 of the governor lever so as to permit moreor less free motion of the lever in a certain direction allowing the lever to attain more or less momentum duringits action in accordance with the relative posi tion of the parts mentioned, it being obvious that v the more lost motion provided. in a given direction, the greater will be the moin that direction before the wardly into tight frictional or braking enmentum attained lever actually comes lDiJO action,

In the form of the mvention lllustrated in Figures Sto 14 inchisive, the governor lever, the supporting bracket thereforand form of the invention, is vertically oiscillatablein the bearing members which are tion. structed of material similar to that of which provided with noiseless bearing linin sleeves 55' such as have hereinbefore bee: described. The] upper end of the actuating rod 52 is providedwitha crank portion 56 which is adapted to work in the slot 57 provided in the end of the longitudinally inovable brake bar 58. l

A fixed bar 59 and a movable bar 60, both shaped from flat metal to be semi-circular in cross section are cooperative with the said longitudinally movable braking bar 58, the said bar being slidably mounted between the same. The bar 59is securedat each end, as at 61, to carrying brackets 62 secured as at 63 to the door and which may be shaped up from single sheets oi metal to provide the securing portions stated andan angle bent portion 64 so formed to provide both guides and end abutments for the movable positely.

A brake sleeve or shoe 65 is providedand mounted in a freely slid-able manner surrounding the members 58, 59 and when the said membersare at their-normal posi- The brake shoe is, of course,con-

eye of the securing rod 67 projects inwardiy through the sleeve and into engagementwith the brake shoe in themanner illustrated, the said brake shoe is effectively held against displacement in a manner, however, which makes possible its ready replacement.

The longitudinally slidable braking bar 58is provided with apertures 71 adapted to" loosely receive ball bearings 72 which, when the said bar58is moved in the proper direction, are adapted to engage cam lugs 73 stamped in the aforesaid bar 59 in a manner for forcing the movable bar 60 outgagement with thebrake shoe 65.

By reference to Figure 10, it will be ob served that all of the bearingbrackets hereinbefore descrlbedi may eith-r be secured directly to the door or upon a common carrier-plate 74 which may be secured in turn upon the door as at? 5, and in which latter instance the whole of the apparatus maybe removed as a unit instead or piece-meal In this mod fied construction of the n *vention, the governor lever function is exlever will move away 1'10111 the door, and in a manner for rocking the brak actuating rod 42 1n a directlon which will not cause a movement of the slidable bar 58 such will effect engagement of ball bearings 2 and cam lugs 73 andapplication of the brake devices. When, however, the door is swung to the closed position, the counterweighteil portion of the lever will swing toward the door and cause rocking of the actuating rod in a direction which will cause longitudinal movement of the said bar 58 in the direction toward the left-in the said Figure 10 and such'as will cause an engagement of the ball bearings and the cam lugs and thereby the forcing outwardly of the movable bar 60 into frictional engagement with. the b shoe 65, thus braking the sliding acnon thereof over the composite slide guid formed by the said members 58, 60. {lbviously, the governing lever structure being the same, the braking action will be so controlled thereby that the braking devices will be applied in degree in accordance with the speed of movement of the door in closing.

Difficulty is often occasioned in the pro vision of door checks upon doors which are equipped with spring latches, such nightlatches. In many instances the checking action of the applied devices continues to the point of absolute closing of the door, thus braking the closing action of the door to the extent where all of the momentum of the closing action has ceased at the time of absolute closing, making it impossible for the door to absolutely close because of the slight obstruction formed by the spring elements.

In other words, the speed of the closing door has been checked to theextent that the door will not close but will remain slightly ajar.

I have sought toovercome this objection and provide for a neutralizingof the brain ing action just prior to the point of absolute closing of the door so that just enough momentum of the door will be saved to permit its absolute closing against the action of whatever spring latches the same may be equipped with. V

To accomplish this purpose, I provide a spring member 76 adapted to be secured to the door check in position for engaging'the top edge of the door in closing and at a point adjacent the path of movement of the governor lever 15. This member includes cam portions 77 adapted to be engaged by the upper edge of the door in opening and closing to permit free passage of the door but for imparting a sufficient cushioning jar to the door to neutralize the position of the governorolever and thus remove brake action and permit the door to completely close easily.

This spring member 76 is, of course,

mounted to extend a distance from the door jamb in accordance with the requirements controlled by whatever spring arrangements the door maybe equipped with, it being possible to extend the said member a greater or lesser degree in accordance with the point at which the brake action should be neutralized to the best advantage. This feature of the invention is, of course, an unnecessary feature to perfect functioning of the invention for the common purpose for which de-' vices of this type are provided and its use is optional. 7

From the foregoing description, taken in comiecti on with the accompanying drawings, it is thought that the novel details of construction, the manner of operation'and the 2. in a device of the class described, a check rod connected to the door frame a SllCl6 guide for slidably and pivotally connecting the check rod with relation to the door, and a brake-device on the door associated with the check rod and adapted to be brought into engagement therewith tocheck the slidable motion of the check rod according to the speed of movement of the door.

In device of the class descrlbed, a check rod connected to the door frame and advantages of the invention will be readily parent to those slnlled in the art to which slidably and pivotally connected with relation to the door, a brake device on the door associated with the check rod to checkthe slidable motion of the check rod, and a vertically pivoted pendulum governor lever and connections for efiecting application of the. brake device to the check rod in accordance with the speed of movement of the door. 7

1-. In a device of the class described, a check rodconnected to thedoor frame and slidably and pivotally connected with relation to the door, a brake device on the door associated with the check rod to check the slidable motion of the check rodyand av ver tically pivoted pendulum and weighted governor lever for automatically effecting ap plication of the brake device to the check rod when the door is closing and the release. thereof when the door is inert or being opened. r

5. In a device of the class described, a check rod connected to the door frame and slidably and pivotally connected with relaand Weighted 'governorlever lor automat-V ically effecting application of the-brake device when the door is closing and the release thereof when the door. is inert or being opened, and means for adjusting the Wei ght and position of weight of the governorlever to increase or diminish the force of its function. v a l GJIn a device l of the class described, a check rod connected to the door trams and slidably and pivotally connected with relationto the door, a brake deviceon the door associated With the check rod to check the slidable motion of the che'ckrod, a-pivoted cally efiecting application of the brake de vloe when the door 18 closing and the release thereof when the door is inert or being opened, and anadjustable lost mot-ion pivot for said governor lever; i l

a 7. In a device of the class described, a check rod connected to the door frame and slidably andv pivotally connected with relation to the door, a brake device on the door associatedwvith the check rodto check the slidable motion of the oheckrod, a pivoted and Weighted governor lever for. automatically effecting, application of the bralre 1 device when thedoor is closing and the. re lease thereof when the door is inertor being opened, an adjustable lost motionlpivot for said govern-or lever, and means for adjusting the Weight and position of weight of the governor lever to increase or diminish the force of its function. 1

8. In a device of the class described, a check rod connected to the door frame and slida-bly and pivotally connected with rela-.

tion to the door, a brake device on the door associated with the check rod to check the slidable motion of the check rod, a pivoted governor lever and connectionsfor-effecting application of the brake device to the check rod in accordance ivlth the speed of movement of the door, and-means for effecting action of the governor lever to effect an an tomatic brake shoe release just prior tocthe absolute closed door position. a i ,9. In a device of the class described, a

check rod connected to the dooratrame and slidably and pivotally connectedwith reiation to the door, a brake device on'the door associated With the check rod topcheck the slidable motion of the cheek rod, a pivoted governor lever and connections for etlfecting,

application of the brake device in accordance with the speed of movementLot-the! 10..1 Ina device of the class describedp a check rod connected to the door frame and slidably and pivotally connected With relation to the door, a brake device on the door associatedavitl'i the check rod to check the slidable motion of the check rod, a pivoted and Wei hted governor lever for automatically enecting application of the brake device when the door is closing and the release thereoif when the door is inert or being opened, an adjustable lost motion pivot for said a governor lever, means for adjusting the ight and position of Weight of the governorlevcr to incre so or diminish the force of its function, and; a fiat spring device secured tothe door frame for engaging the door to cause the governor lever to effect an automatic brake, shoe release just prior to the absolute closed door position.

-11. In a device of the class described, a check rod pivoted to a fixed support, a guide mechanism for the check rod and mounted upon a: door, a brake shoe carried by the guide mechanism, and lever devices including a pendulum for applying the brake shoe to b airing contact Withthe check rod.

1,2. In, a device of the classdescribed, a check rod pivoted to a ,fixed support, a guide mechanism mounted upon a door and through which the check rod passes, a brake shoe carried by the guide mechanism, levers for efiecting application of the brake shoe to the check rod, anda pivoted governor lever for acting upon the brake applying levers to causeythem: to apply the brake shoewhen thed-oor is closing. a

In a device of the class described, a check rod pivoted to afixcd support, a guide mechanism associated With the check rod and mounted upon door, a brake shoe carried loythe guide mechanism, levers for effecting application of the brake shoe to the cheolc rod, and a vertically pivoted and Weighted pendulum governor lever for act ing upon the brake applying levers to cause them to apply the brake shoe when the door closed and to automaticallyrelease the same when the door is 'iert orheing opened. 1 w V 1 It. In a device of the class described, a checkrodpiv-oted to a fixedusupport, a guide mechanism associated With thecheck rod andmountedhpon a door, a brake shoe car- 1 rdd and mounted upon a door, a brake shoe carried by the guide mechanism, levers for effecting application of the brake shoe, a pivoted governor lever for acting upon the brake applying levers to cause them to apply the brake shoe when the door is closing, a flat sp-ing device secured to the door frame for engaging the door to cause the governor lever to eii'ect an automatic brake shoe release just prior to the absolute closed position.

16. In a device of the class described, a check rod pivoted to a fixed support, a guide mechanism associated wit-h the check rod and mounted upon a door, a brake shoe carried by the guide mechanism, levers for effecting application of the brake shoe, a pivoted and weighted governor lever for acting upon the brake applying levers to cause them to apply the brake shoe when the door is closed and to automatically release the 1 same when the'door is inert or being opened,

and means for adjusting the weight and position of weight of the governor lever to in crease or diminishthe force of its function. '17. In a deviceof'the class described, a check rod pivoted to a fixed support, a guide mechanism associated with the check rodand mounted upon ado-or, a brake shoe carried by the guide mechanism, levers for effecting application of the brake shoe, a pivoted and weighted governor lever for acting upon the brake applying levers to cause them to apply the brake shoe whenthe door isclosed and to automatically release the same when the door is inert or being opened, and an adjustable lost motion pivot for the said governor lever. 18. In a device of the class described, a check rod pivoted to a fixed support, a guide mechanism associated with the check rod and mounted upon a door, a brake shoe carried by the guide mechanism, levers for eftecting' application of the brake shoe, a pivofed and weighted governor leverfor acting rpon the brake applying levers to cause them to apply the brake shoe when the door is closed and to automatically release the same when the door is inert or being opened,

an adjustable lost motion pivot for the said v governor lever, and: means for adjusting the weight and position of weight of the governor lever to increase or diminish the force of its function.

19. In device of the class described, a check rod pivoted to the doorjamb, a turntable, bearings carried by the turn-table for 'slidably receiving the check rod, a brake shoe 7 associated with the turntable and positioned for en a 'in the check rod at times levers a E L 7 tor applying the brake shoe, a bracket for 'n'ovidmg bearing forturn-table and levers,

table, bearings carried by the turn-table for slidably receiving the check rod, a brake shoeassociated with the turntable andpositioned for engaging the check rod at times,

levers for applying the brake shoe, a bracket shaped up from a single sheet of metalfor providing bearing for turn-table and levers, and means for governing the action of the levers to effectapplicationof the brake shoe according to the speed of'movement of the door.

21. In av device of the'class described, a check rod pivoted to the door jamb, a turntable, bearings carried by the turn-table for slidably receiving the check rod, a brake shoe associated with the turn-table and positioned for engaging the check rod at times, levers for applying the brake shoe, a bracket for providing bearingfor turntable and levers, a packer disk inserted between turntable and bearing bracket, and means for governing the action of the levers to'eiiect application of the brake shoe according to the speed of movement ofthe door.

Ina device of the class described, a check rod pivoted to the door'jamb, a turntable, bearings carried'by the turn-table for slidably receiving the check rod, a brake shoe associated with the turn-table and positioned for engaging the check rod at times, a bracket shaped up from a single sheet of. metal for providing bearingfor turn-table and levers, a'packer disk inserted between turntable and bearing bracket, and means for governing the action ot'the levers to feet application of the brake shoe according to thespeed of movement 'ofthe door.

23. In a device of the class described, a check rod pivoted to the door jan'ib, a turntable, bearings carried by the turn-table for slidably receiving the check rod, a brake shoe associated with the turn-table and positioned for engaging the check rod at times, a bracket shaped up from a single sheet of metal .for providing bearing for turn-table and levers, a packer disk inserted between turntable. and bearing bracket, and a pivoted and weighted governor leverfor automatically acting upon'the levers for eliect' ing brake application in accordance with the speed of movement of the door, an adjust able 10st motion pivot for the governor lever, and means for adjusting the weight and position of weight of the governor lever toincrease or diminish its force of function;

ERNST WILLIAM FERDlNAND HERRMANN. 

